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1.The trailer-spreader was used to spread fertilizer on the fields.
拖车式播种机被用来在田地上撒化肥。
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2.The farmer used the trailer-spreader to plant seeds in the spring.
农民在春天使用拖车式播种机播种种子。
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3.The trailer-spreader helped the farmers to save time and labor.
拖车式播种机帮助农民节省时间和劳动力。